The union for employees of the Internal Revenue Service is opposing a GOP bill that would force them out of the current health care plan for federal employees and into the exchanges created by Obamacare, the Washington Examiner reported Thursday.

The bill by Rep. Dave Camp (R-MI) would move federal employees, including the president and vice president and lawmakers and their staffs, from the Federal Employees Health Benefits Program into Obamacare. The majority of nearly 100,000 IRS employees have coverage through the FEHBP, according to the Examiner.

Leaders from the National Taxpayer Employee Union provided members with a letter to send to their congressional representatives reading, "I am very concerned about legislation that has been introduced by Congressman Dave Camp to push federal employees out of the Federal Employees Health Benefits Program and into the insurance exchanges established under the Affordable Care Act," according to the Examiner.